Title:
MULTI-SPEED TRANSMISSION
Document Type and Number:
WIPO Patent Application WO/2011/066158
Kind Code:
A3
Abstract:
A multi-speed transmission (100) employs an efficient number of components to provide at least nine forward gear ratios and at least two reverse gear ratios between an input member (16) and an output member (20) disposed in a housing (14). The transmission may employ four planetary gear sets (30, 32, 34, 36). Each planetary gear set may include a sun gear (38/44/50/56), a planet carrier (40/46/52/58), and a ring gear (42/48/54/60). Six control elements (62/64/66/68/70/72) may be operably coupled to the planetary gear sets and selectively engageable to create the forward and reverse gear ratios.
Inventors:
MEYER KEVIN G (US)
RICE JAMES S (US)
KNOX KEVIN J (US)
CARPENTER LARRY W (US)
HODGES PETER H (US)
RICE JAMES S (US)
KNOX KEVIN J (US)
CARPENTER LARRY W (US)
HODGES PETER H (US)
Application Number:
PCT/US2010/057144
Publication Date:
September 22, 2011
Filing Date:
November 18, 2010
Export Citation:
Assignee:
CATERPILLAR INC (US)
MEYER KEVIN G (US)
RICE JAMES S (US)
KNOX KEVIN J (US)
CARPENTER LARRY W (US)
HODGES PETER H (US)
MEYER KEVIN G (US)
RICE JAMES S (US)
KNOX KEVIN J (US)
CARPENTER LARRY W (US)
HODGES PETER H (US)
International Classes:
F16H3/64; F16H3/44
Domestic Patent References:
| WO2009077363A1 | 2009-06-25 |
Foreign References:
| US20070072732A1 | 2007-03-29 | |||
| US20060205556A1 | 2006-09-14 | |||
| KR20090097635A | 2009-09-16 |
Attorney, Agent or Firm:
TROUSDALE, Jonathan, V. et al. (Peoria, IL, US)
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